Debt - Components of Debt (Parenthetical) (Detail)	Sep. 30, 2012	Jun. 30, 2012
Line of Credit [Member]
Debt [Line Items]
Interest rate in addition to LIBOR	0.625%	0.625%
Yen Revolving Credit Facility [Member]
Debt [Line Items]
Interest rate in addition to LIBOR	0.625%	0.625%

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant